<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>箭头函数</title>
    <script>
        function hello(a,b){
            console.log(a + "+" + b + "=" + (a + b));
        }

        let hi = function(a,b){
            console.log(a + "+" + b + "=" + (a + b));
        }

        let hehe = a => a;


        let result = hehe(80);

        console.log(result)

    </script>
</head>
<body>

</body>
</html>